ATmega16U4 datasheet(7/408 Pages) ATMEL

部品番号	ATmega16U4

部品情報	8-bit Microcontroller with 16/32K Bytes of ISP Flash and USB Controller

PDF	408 Pages

Scroll/Zoom	100%

メーカー	ATMEL [ATMEL Corporation]

ホームページ	http://www.atmel.com

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7 / 408 page

7766D–AVR–01/09

ATmega16U4/ATmega32U4

2.2.11

UVCC

USB Pads Internal Regulator Input supply voltage.

2.2.12

UCAP

USB Pads Internal Regulator Output supply voltage. Should be connected to an external capac-

itor (1µF).

2.2.13

VBUS

USB VBUS monitor input.

2.2.14

RESET

Reset input. A low level on this pin for longer than the minimum pulse length will generate a

reset, even if the clock is not running. The minimum pulse length is given in Table 8-1 on page

49. Shorter pulses are not guaranteed to generate a reset.

2.2.15

XTAL1

Input to the inverting Oscillator amplifier and input to the internal clock operating circuit.

2.2.16

XTAL2

Output from the inverting Oscillator amplifier.

2.2.17

AVCC

AVCC is the supply voltage pin (input) for all the A/D Converter channels. If the ADC is not used,

it should be externally connected to V

CC. If the ADC is used, it should be connected to VCC

through a low-pass filter.

2.2.18

AREF

This is the analog reference pin (input) for the A/D Converter.

ATmega16U4 データシート(PDF) 7 Page - ATMEL Corporation